485173821 has 12 divisors (see below), whose sum is σ = 711054176. Its totient is φ = 294044520.

The previous prime is 485173817. The next prime is 485173823. The reversal of 485173821 is 128371584.

It is not a de Polignac number, because 485173821 - 2² = 485173817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 485173821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485173823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667921 + ... + 668646.

Almost surely, 2^485173821 is an apocalyptic number.

It is an amenable number.

485173821 is a deficient number, since it is larger than the sum of its proper divisors (225880355).

485173821 is a wasteful number, since it uses less digits than its factorization.

485173821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336592 (or 1336581 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 485173821 is about 22026.6615945313. The cubic root of 485173821 is about 785.7766508592.

The spelling of 485173821 in words is "four hundred eighty-five million, one hundred seventy-three thousand, eight hundred twenty-one".